From ca67b09c015d4af3ae3cce12aa72e60941dbb8b5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:52 +0200 Subject: Adding debian version 2.06-13+deb12u1. Signed-off-by: Daniel Baumann --- .../grub-extras/disabled/gpxe/src/core/process.c | 106 +++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 debian/grub-extras/disabled/gpxe/src/core/process.c (limited to 'debian/grub-extras/disabled/gpxe/src/core/process.c') diff --git a/debian/grub-extras/disabled/gpxe/src/core/process.c b/debian/grub-extras/disabled/gpxe/src/core/process.c new file mode 100644 index 0000000..9c13e02 --- /dev/null +++ b/debian/grub-extras/disabled/gpxe/src/core/process.c @@ -0,0 +1,106 @@ +/* + * Copyright (C) 2006 Michael Brown . + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include +#include +#include + +/** @file + * + * Processes + * + * We implement a trivial form of cooperative multitasking, in which + * all processes share a single stack and address space. + */ + +/** Process run queue */ +static LIST_HEAD ( run_queue ); + +/** + * Add process to process list + * + * @v process Process + * + * It is safe to call process_add() multiple times; further calls will + * have no effect. + */ +void process_add ( struct process *process ) { + if ( list_empty ( &process->list ) ) { + DBGC ( process, "PROCESS %p starting\n", process ); + ref_get ( process->refcnt ); + list_add_tail ( &process->list, &run_queue ); + } else { + DBGC ( process, "PROCESS %p already started\n", process ); + } +} + +/** + * Remove process from process list + * + * @v process Process + * + * It is safe to call process_del() multiple times; further calls will + * have no effect. + */ +void process_del ( struct process *process ) { + if ( ! list_empty ( &process->list ) ) { + DBGC ( process, "PROCESS %p stopping\n", process ); + list_del ( &process->list ); + INIT_LIST_HEAD ( &process->list ); + ref_put ( process->refcnt ); + } else { + DBGC ( process, "PROCESS %p already stopped\n", process ); + } +} + +/** + * Single-step a single process + * + * This executes a single step of the first process in the run queue, + * and moves the process to the end of the run queue. + */ +void step ( void ) { + struct process *process; + + list_for_each_entry ( process, &run_queue, list ) { + list_del ( &process->list ); + list_add_tail ( &process->list, &run_queue ); + DBGC2 ( process, "PROCESS %p executing\n", process ); + process->step ( process ); + DBGC2 ( process, "PROCESS %p finished executing\n", process ); + break; + } +} + +/** + * Initialise processes + * + */ +static void init_processes ( void ) { + struct process *process; + + for_each_table_entry ( process, PERMANENT_PROCESSES ) + process_add ( process ); +} + +/** Process initialiser */ +struct init_fn process_init_fn __init_fn ( INIT_NORMAL ) = { + .initialise = init_processes, +}; -- cgit v1.2.3